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Anatomy And Physiology For The Speech And Hearing Impaired > Laryngeal Framework > Flashcards

Laryngeal Framework Flashcards

1
Q

Larynx

A
  • border between the upper and lower respiratory tracts

- musculocartilaginous structure located at the superior end of the trachea

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2
Q

How many bones does the trachea have?

A

One. The hyoid bone.

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3
Q

Superior boundary of the larynx:

A

Hyoid bone

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4
Q

Inferior boundary of the larynx:

A

Cricoid cartilage

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5
Q

Biological function of the larynx:

A

Prevents foreign material from entering the lungs and expels foreign substances that attempt to enter the trachea/lungs

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6
Q

Non biological function of the larynx

A

Breathing and voice production or phonation

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7
Q

Hyoid bone

A
  • 1
  • unpaired bone and the only bone in the larynx. It is u-shaped and opens posteriorly. (Like a horseshoe)
  • most superior part of the larynx
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8
Q

Functions of the hyoid bone: 3

A
  1. Suspends the larynx
  2. Serves as a POA for some extrinsic laryngeal muscles and the inferior attachment for most of the tongue musculature
  3. Supports the root of the tongue.
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9
Q

Parts of the hyoid bone: 3

A
  1. Lesser horns (Cornu): anterior
  2. Greater horns (Cornu): will project posteriorly
  3. Corpus: body
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10
Q

Thyroid cartilage:

A
  • 1
  • has a prominent anterior surface made up of two plates called the thyroid laminar that are fused at midline at the thyroid angle.
  • unpaired and the largest of the laryngeal cartilages
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11
Q

Thyroid laminate

A
  • prominent anterior surface made up of two plates
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12
Q

Thyroid angle

A
  • where the thyroid laminar are fused together at midline
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13
Q

Thyroid notch

A

The superior-most portion of the thyroid angle (Adams apple)

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14
Q

Why is the thyroid notch important?

A

It serves as a marker during X-rays during swallow evaluations, where the anterior point of your vocal points attach

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15
Q

What is on the posterior aspect of the thyroid cartilage?

A

Two sets of Cornu/horns

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16
Q

Inferior Cornu

A

Project inferiorly to articulate with the cricoid cartilage

17
Q

Superior Cornu

A

Project superiorly to articulate with the hyoid bone

18
Q

Where can the oblique line be found?

A

On the lateral, superficial aspect of the thyroid laminae

19
Q

The oblique line serves as a point of attachment for…

A

Some laryngeal muscles

20
Q

Cricoid cartilage

A
  • unpaired
  • the most inferior portion of the larynx
  • taller posteriorly than it is anteriorly and shaped like a signet ring
21
Q

The cricoid cartilage is superior to…

A

The first tracheal ring

22
Q

Posterior quadrate lamina:

A

The superior surface of the cricoid cartilage where the arytenoid cartilages articulate

23
Q

What does the laryngeal Framework consist of?

A 
1 hyoid bone
1 thyroid cartilage 
1 cricoid cartilage
1 epiglottis (elastic cartilage)
2 arytenoid cartilages
2 corniculate cartilages 
2 cuneiform cartilages
24
Q

Epiglottis

A

An unpaired leaf-shaped cartilage. It arises from the inner surface of the angle of the thyroid cartilage, just below the notch.

25
Q

The epiglottis projects…

A

Upward beyond the larynx and above the hyoid bone and is attached to the root of the tongue.

26
Q

The sides of the epiglottis are joined with…

A

The arytenoid cartilages via the aryepiglottic folds.

27
Q

Aryepiglottic folds are produced by…

A

The membranous lining overlapping muscle and connective tissue and extends from the apex of the arytenoid to the lateral margins of the epiglottis

28
Q

Arytenoids articulate with…

A

The cricoid cartilage on the superior portion of the posterior quadrate lamina and has four processes/surfaces

29
Q

Primary function of the arytenoids

A

Allows movement of the vocal folds for phonation/voicing and swallowing

30
Q

Vocal process

A

Projects anteriorly towards the thyroid notch. The posterior portion of the vocal folds are attached to this process.

31
Q

Muscular process

A

Projects laterally on the arytenoid cartilage and is a point of attachment for muscles that abduct and adduct the vocal folds.

32
Q

Cricoid cartilage

A

Unpaired and is the most inferior portion of the larynx. It is taller posteriorly than it is anteriorly.

33
Q

The cricoid cartilage is superior to…

A

The first tracheal ring

34
Q

The posterior quadrate lamina is…

A

The superior surface of the cricoid cartilage where the arytenoid cartilages articulate.

35
Q

The cuneiform cartilages are…

A

Small cartilages that are embedded in the aryepiglottic folds and they serve to support the membranous laryngeal covering.

36
Q

The corniculate cartilages rest…

A

On the apex of the arytenoid.

Anatomy And Physiology For The Speech And Hearing Impaired (7 decks)

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